Automatic grease-cup.



J. P. LEWIS.

AUTOMATIC GREASE 0UP.

APPLIOATION FILED 11111.12, 1908.

1,003,976. Patented Sept. 12,1911.

I M i wflawz WWW ATENT onnion.

JOHN LEWIS, F PEILADELPHIA, PENNSYLVANIA.

AUTOMATIC GREASE-CUP.

Specification of Letters Patent.

Application filed August 12, 1908. Serial No. 448,135.

I To all whom it may concern:

cross wires for limiting the Be it known that I, JOHN F. LEWIS, a citizen of the United States, residing at lhiladelphia, county of Philadelphia, and State of Pennsylvania, have invented a certain new and useful Improvement in Automatic Grease-Cups, of which the following is a specification.

My invention relates to a new and useful improvement in automatic grease cups, and has for its object to provide an exceedingly simple and eifective construction by which the screw threads upon the body and cap will be packed against the escape of air in order that a certain amountof air pressure 1 may be created in the cup for feeding the grease therefrom.

A further objectof my invention is to so arrange and guide the disk as to cause it to maintain a level' surface upon the grease contained in the cup and scrape the sides of the cup in its downward movement, and-a still further object of my invention is to provide means for preventing the disk from closing upon the bottom of the cup which would stop the feeding of the grease.

"With these ends in View, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to whic 1 this invention appertains may understan how to make and use the same, I will describe its construction in detail, referringv by letter to the accompanying drawing forming a. part of this specification, in

Figure 1 is a plan view' of my improved grease cup. Fig. 2, a sectional elevation of the same, enough of the body and cap being broken away to show the interior construction. F ig.3,a side view of the plunger disk and the telescoping tubes for guiding the same, and Fig. 4:, a plan view of the downward. movement of the plunger disk.

In carrying out my invention as here embodied, A represents the body of the cup having the screw threads B formed upon its outei' surface, and as is usual, the body is provided with a threaded nipple C for screwing into the hole through which the 'Tubricant is conveyed to the hearing to be oiled.

D represents the or cover which has formed upon its inner surface the screw threads E over which 1s fitted a leather or other compressible material as indicatedat I compressible material is threaded'to correspond Wllill the threads'E' F. and this and is adapted to engage with the threads B of thebody so that when the cap is secured. upon the body the'thre'ads will be packed against the escape of air. The cap has formed therewith the wrench hold G the interior of which is threaded to receive the threaded end of the tube H, and I is the disk tube which is adapted to telescope within the tube H and is guided and prevented from being entirely withdrawn therefrom by the pin J passing through the slots K formed in said tube 1. The disk L is secured to or formed with the tube I and is of such diameter as toinsure the scraping of the grease from the sides of the cup as said disk moves downward, but this disk should not bind upon said sides, nor prevent the passage of air between its edges and the walls of the cup.

M represents two cross wires secured in 'the cup at the poi.nt"where the bottom is inclined, the object of which is to arrest the downward movement of the disk L and pre vent it from seating upon the bottom of the Patented Sept. 12,1911;

cup and thereby excluding the air from the top of the grease which would prevent the further feeding of said grease.

From the foregoing description it will be seen that a grease cup of exceedingly simple construction is provided in which the grease will be automatically fed by the pressure of the air contained in the cup, and this air pressure may be increased from time to time by the screwing down of the cap upon the body. The disk L resting upon the top of the grease will keep a level surface and facilitate the action of the air, and when the disk comes in contact with the cross wires M sufiicient air will pass around the edges of the disk L to continue to force the grease from the cup so that the entire contents of the cup will be fed to the bearing. The disk being free to move downward 1n the cup will followthe grease as it is fed and as the tube I to which this disk is attached is guided in the tube J the disk cannot be tilted or displaced it greatly facilitates this operation.

0f course I the exact details of construction here shown as these may be varied without departing tion, what I claim as new and useful, is-

1. The herein described combination of a grease cup body, having an inclined bottom, a cap adapted to move up and down I upon saidbody, cross wires located at the top of the incline of said bottom, a tube 10- cated withinthe cap, a slotted tube telescoping with the first named tube, a pin set in the first named tube and passing through the slot in the slotted tube, and a plunger disk carried bythe lower end of the slotted tube, said disk adapted to contact with the cross wires, as and for the purpose set forth.

2. In a grease cup, the combination of a body, the bottom of said body being inclined, cross wires located at the top of the incline of said bottom, said body having external threads formed thereon, a cap, having threads formed upon the interior thereof, a layer of leather covering said internal threads, said leather being threaded and adapted to engage the external threads, a tube located within the cap, a slotted tube adapted to telescope the first named tube, a pin for holding the last named tube in position, and a plunger disk secured to the slotted tube, as and for the purpose set forth.

In testimony whereof, I have hereunto afiixed my signature in the presence of two subscribing witnesses.

JOHN F. LEWIS.

Witnesses:

E. N. SCHOFIELD,

Enw. W. Answer. 

